Safety rod hook



J. E. POTTER SAFETY ROD noox Nqv. ,22, 1921;

Filed May 6. 1927 Patented Nov. 22, 1927.

UNITED STAT-ES JOHN E. ro'r'rnn', on nLnoniino, KANSAS.

SAFETY ROD HOOK; 7

Application filed May a, 1927. Serial 1%. 189,359. g

This invention relates to lifting hooks, especially designed for use in lifting or pulling well tubing or rod-s, heavy machinery or the like, the primary object of the invention being to provide a hook ofthis character which when positioned for use will be locked to insure against the same becoming discon nected from the article.

An important object of the invention isto provide means for Closing the open portion of the hook, after theihook has been positioned to accomplish its purpose-and to pro vide means independently of the closing means for locking the closing mean-s against movement in either direction. 7

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter de scribed and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made invention, a portion thereof being shown "in section.

Figure 2 is a side elevational view of the hook, the tubular member surrounding the shank of the hook being shown in section.

Figure 3 is a fragmental elevational View U of the shank and tubular member'surrounding the shank.

Referring to the drawing in detail, the

reference character designates the shank of the hook which is provided with an enlargement 6 adjacent to the hook defining a shoulder against which the lower end of the coiled spring 7 contacts, the opposite end of the coiled spring resting against the shoulder 8 formed within the tubular member 9, which is of a length less than the length of the shank 5, so that the tubular member may move longitudinally of the shank for pur-' poses to be hereinafter more fully described. A cut out portion 10 is formed in the shank and is designed to accommodate the finger 11 formed at on-e'end of the latch member 12, carried by the tubular member,

the latch member 12 being normally held.

in its locking position, or position as shown by Figure 1 of the drawing by means of the reduced portion 14; extending through the provided with aligning grooves to accomcoiled spring 13 member. n a I The shank 5 hasa reduced end portion 14 threaded to accommodate the nut 15, the

that bears against the latch member 16 of which the lifting ring 17 forms a part. Bearing members indicated at 18 are also positioned on the reduced portion 14 of the shank, the bearing members being modate the balls 19 to permit the lifting ring and member 16 to rotate freely on the reduced portion, andwith respect to the shank so that. the hook may be readily and. easily positioned on the article to be lifted."

. The hook proper is indicatedgenerally by the reference character 20 and is provided with a cut out portion in which the locking arm'21 is pivot-ally mounted as-at 22,the arm 21 being off a length to extend'across the mouth of the hook as clearly shown by Figure 20f the drawing, the free end of the arm 21 resting in the notch or keeper 23 which defines a shoulder to restrict outward movement of the arm and insure against the hook becoming accidentally disconnected from the, article being lifted.

As shown, the arm 21 isformed with an enlargement, 2 1 that has an opening to accommodate the in 25 that connects the link 26 thereto, the ink being provided with a bifurcated extremity as shown by Figure 1 wherein the enlarged portion 24 isdisposed.

The opposite end of the link .26 extends into the cut out portion :27 of the tubular member 9 and is pivotally connected with the tubular member as by means of the pivot pin 28. Thus it will be-seen that as the tubular member 9 is moved, the locking arm 21 is moved correspondingly and that when the latchmember"12 is moved to a position as shown byFigure 1, the tubular member 9 will be locked against movement, to the end that the arm will be securely heldin its locking position and may only be released 1 member being shorter than the shank to 1 permit thetubular member to movejlongitw arm when the tubular membe'r'is moved over dinally of the shank, a spring supported the shank, andalatch member for normally 10 Within the tubular member and adapted to holding the tubular member against movenormally hold the tubular member to the ment.

limit of its outward movement, a locking In testimony that I claim the foregoing as arm pivotally supported by the hook and myown, I have hereto aflixed my signature. adapted to close the hook, a link connecting the tubular member and arm to move the 7 JOHN E. POTTER. 

